Charlestown, Ind. (WDRB) -- A Charlestown, Indiana middle school teacher has been arrested on drug charges. The teacher, Kevin Hennegan, has been suspended with pay as the investigation continues.

Hennegan is 56 years old and has taught at Charlestown Middle School since the 90s. He is facing three drug charges, including one felony.

Those who know Hennegan are very surprised by his arrest.

Hennegan was arrested late yesterday afternoon on school property. He is charged with Maintaining a Common Nuisance, which is a Class D Felony; and two misdemeanors, Possession of Marijuana and Possession of Paraphernalia.

Hennegan teaches Social Studies at Charlestown Middle School and has worked for the Greater Clark School District since 1990.

In a written statement, superintendent Andrew Melin said Hennegan has been suspended with pay pending an investigation into what he called "a very serious situation."

The statement goes on to say that there is no indication that students were involved in this matter.

People who know Hennegan say they are shocked by the arrest. They call him a good guy and a great teacher.

"He was always a great role model and everyone loved him because he was so funny," said former Charlestown Middle School student Katie Burkhart.

Clare Burkhart is the former PTO president and worked with Hennegan for years.

"He's just a very special person," she said. "Very giving and very caring and really, really good to the students and very involved in all school activities. So, he's a good guy."

Charlestown Police say the investigation is ongoing and more information may be available on Monday.

"It's really surprising. I don't know why or anything, but I definitely wouldn't expect it from him," said Katie Burkhart.

"Just a wonderful guy, and I think there's probably some background information that we just don't know why something like that would happen," said Clare.

Hennegan was booked into the Clark Co. Jail and later freed on $5,000 bond. He is scheduled to be in court on January 7.